Permutation trunk-lock.



E. P. CRANDALL. PERMUTATJON TRUNK LOCK. APPLICATION FILED APR.30. I915.

Patented June 19, 1917.

2 SHEETS-SHEET I.

E P. CRANDALL.

PERMUTATION TRUNK LOCK.

APPLICATION FILED APR. 30,1915. I .7 1,%30,126. I Patented June 19, 1917.

2 SHEETS-SHEET 2.

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PERMUTATION TRUNK-LQCK.

Specification of Letters Patent.

Patented June 19, 1917.

Application filed April 30, 1915. Serial No. 24,970.

(13K whom may concern Be it known that EMERY P. CRANDALL, a citizen of the United States, and residing at Washington, District of Columbia, has invented certain new and useful Im provements in Permutation Trunk-Locks, of which the following is a specification.

This invention generically relates to permutation locks of generalapplication, but it more specifically comprehends a lock construction designed for use with trunks, suit cases, and other similar articles.

One object of this invention is the pro vision of a permutation lock for trunks and the like, having its bolt actuating means operatively connected to a revoluble spindle and provided with a spring-pressed detent rectilinearly movable therethrough, and normally ineffective, but capable of functioning as an interlocking means between the spindle and permutation mechanism positioned thereon, after operation of said mechanism in a predetermined manner.

Another object of this invention is to design a lock involving a revoluble spindle, a spring-pressed detent seated therein, and an operating means for the spindle independently movable relative thereto, and adapted to effect rotation of the spindle when actuated in one direction, with the detent operatively disposed, and depression of the detent when operated in the opposite direction.

Other and coincidental objects are to provide, a lock, affording ready access to the various parts and convenient disassembling thereof; a novelly designed casing, whereby the operating knob is seated within the dial plate to avoid undesirable protuberances and a bolt actuating mechanism eliminating lateral pressure during retraction of the bolts.

Vltll these and other objects in view my invention consists of certain novel details of construction, combination and arrangement of parts to be more particularly hereinafter set forth and claimed.

In. the accompanying drawings in which corresponding parts are indicated by similar reference characters;

Figure 1 is a front elevation of my improved permutation lock iilustrating the latter as situated in the socket plate of the trunk, a fragment of the cover and one side of the trunk being shown;

Fig. 2 is a transverse vertical section of .the trunk and cover therefor, illustrating in section the socket plate, and the lock seated therein, in elevation, together with its hasp and hasp plate;

Fig. 3 is a rear elevation of a hasp plate, hasp and lock carried thereby, the rear cap plate of the lock being removed;

Fig. 4 is a transverse vertical section taken on the line of Fig. 3;

Fig. 5 is a rear elevation of a fragment of the hasp, the lock carried'thereby, the rear cap plate of the lock being removed, and the bolts shown in retracted position;

Fig. 6 is a perspective view of one of the bolts;

Fig. 7 is an end elevation of the casing for the internal mechanism of the lock;

Fig. 8 is an end elevation of the bolt actuating mechanism;

Fig. 9 is a horizontal section taken on the line 9-9 of Fig. 8;

Fig. 10 is a transverse vertical section taken on the line 10-10 of Fig. 9 in the direction of the arrows;

Fig. 1.1 is a similar view taken on the line 1111 of Fig. 9 in the direction of the arrows;

Fig. 12 is a similar view taken on the line l212 in the direction of the arrows;

Fig. 13 is a disassembled side elevation of the bolt actuating mechanism.

In the illustrated embodiment characterizing this invention A indicates the cover of a trunk and B its body. Secured to the cover A by a suitable fastening element is a hasp plate 1, having hingedly connected therewith a hasp 2. Integral with the lower end of hasp 2 is an annular dial plate 3 having an annular opening 4. The outer surface of dial plate 3 is graduated, the graduations advancing uniformly from to Zero, the point indicated by the numeral GO'being disposed on that portion of the upper hemispherical section of the plate which is situated in alinement with the vertical axis of the latter. Plate 3 has projecting rearwardly an integrally formed flange 5, having in the inner surface thereof an annular recess 6, the purpose of which will be hereinafter set forth.

An annular casing 7 having a diameter corresponding substantially to the opening l in dial plate 3 has its inner end telescopically disposed within said opening.

The laterally projecting flange 8 formed around the outer surface of easing 7 in spaced relation to the inner end thereof adapted to be seated in the recess 6. Th1s flange 8 is provided at predetermined points with openings 9 through which suitable fastening elements may pass, wherein, the easing 7 may be firmly aflixed to the flange 5 of the dial plate.

Integrally formed with the wall of casing 7 and disposed within the latter in spaced relation to the outer end thereof is a guideplate 10, having therethrough a concentric opening 11, also the diametrically arranged bayonet slots 12, equally positioned with respect to the opening 11. To permit the bolts hereinafter to be referred to, to extend laterally through the casing, its outer edge has formed therein at diametrically opposite points, two notches 13, having such depth, when the bolts are seated their outer surfaces will be disposed substantially in a plane with the inner edge of the casing. Disposed upon the outer edge of said casing 7 is a cap plate 14 retained in position by suitable fastening elements passing therethrough and into the edge of the casing which will be readily understood without further description.

The foregoing structure constitutes the housing or casing of the bolts and mechanism for actuating the same. This casing together with the peripheral flange of the dial plate is adapted to be seated in a socket plate 15 positioned in a suitably formed opening extending through the body of the trunk B. This socket plate 15 has a configuration conforming approximately to a that of the casing and flange of the dial plate as clearly shown in Figs. 2 and 4 of the drawings. Inasmuch as no novelty is claimed in connection with the specific form of this socket plate, further description with respect to the same is thought to be unnecessary.

An end plate 16 has formed around its periphery a laterally extending flange 17 and rearwardly projecting peripheral flange 18 having therein at predetermined points suitable openings through which fastening elements may pass. This rearwardly extending flange 18 is adapted when the end plate 16 is properly positioned, to seat within the inner end'of casing 7. Then thus disposed, laterally extending flange 17 abuts the inner edge of housing or casing 7 as clearly shown in Fig. 1 of the drawings. concentrically formed in the inner surface of end plate 16 is an annular recess 19, the purpose of which is to suitably space the inner surface of plate 16 from the inner end of the spindle hereinafter to be referred to. An annular detent operating plate 20, is adapted to have its body portion positioned in the seat formed in end plate 16 by the rearwardly extending flange 18. Detent operating plate 20 has formed around its 136* riphery a laterally extending flange which when the plate is in the position aforesaid abuts the edge of flange 18, as will be readily understood without further description. An opening 21 is formed through the central portion of plate 20 said opening being surrounded. by a laterally extending flange 22, provided with an opening 23, alining With a notch 2%, in plate 20. One wall of notch 24 presents a straight surface, while the other wall is arcuate in design, for a purpose hereinafter to be set forth. The adjacent edges of the laterally projecting flange 22 are shaped to form a continuation of the vertical and arcuate shaped portions of the wall surroundingsaid notch. A spindle 25 projects through the opening 21 in plate 20 and has a laterally extending flange 26 formed on the inner end thereof, seated in an annular recess 27 formed in the inner surface of plate 20 contiguous the opening therethrough. From this coir struction it will be apparent that the spindle 25 may be rotatably secured intermediate the plates 20 and 16 respectively. Formed in the spindle 25 is a longitudinally extending recess 28. This recess 28 connects with the slots 29, 30 and 31 in the upper, lower and end portions of the spindle respectively. Seated within the recess 28 of spindle 25 is a detent 32. The detent 32 has on each side thereof in spaced relation to its upper edge a pair of shoulders 32 and 32", the upper edges of which, when the detent is in operative position abuts the shoulder 33 and the upper edge of slot 31. By providing the slots 29 and 31 respectively and having the detent and shoulder 32" pro jecting therethrough the detent will move uniformly through the spindle as will be readily understood without further description.

A curved leaf spring 34L is connected at one end by a suitable fastening element to the under surface of the lower edge of shoulder 32", the free end of leaf spring 34: being fastened as at 35 to the spindle 25. This leaf spring 3 1 will normally tend to force the detent upwardly through theslot 29 in the spindle until the edge of shoulders 32 and 32 abut shoulder 33 and upper edge of notch 31 as clearly shown in Fig. 9 of the drawings. spindle 25 in juxtarelation are two tumbler disks 36 and 37 respectively. Each of the tumblers is provided with oppositely projecting flanges 38: and 39 surrounding opening 40. Notches 41 are formed in the tumblers and extend through flanges 38 and 39. Laterally projecting cooperating lugs 42 carried by the respective tumbler plates, and similarly projecting lug as on plate 20 permit of co-action between said plates.

In order that the combination may be changed whenever desired the detent operat- Loosely mounted upon the.

ing plate 20 has its inner surface formed with a plurality of internally threaded openings 44, arranged in predetermined relation, by means of which the lugs 43 may be positioned at different points on the plate 20 and thus enable the combination of the lock to be changed whenever desired.

The inner end of spindle when properly positioned within casing 7 projects through the opening 11 formed in guide plate 10, for a purpose hereinafter to be set forth. Slidably mounted upon the outer surface of guide plate 10 are the bolts 45 having the beveled portion 46 as clearly shown in Fig. 3. The inner surfaces of the bolts are formed with recesses 47 adapted to receive the free ends of springs 48 whereby said bolts will be normally maintained in extended position. The other ends of said springs are coiled around the vertically disposed pins 49. Each of the bolts 45 are formed with the yoke shaped extensions 51. Projecting right angularly of each of said yoke shaped extensions adjacent one end is a guiding pin 52 adapted to extend through slots 12 in the guiding plate 10. Also projecting laterally from each of the yoke shaped extensions 51 is a stop 53. Stops 53 are located on the opposed arms of yokes 51, so as to be situated in diagonal relation. In this connection it is to be observed the contact surfaces of stops 53 are arcuate shaped for a purpose hereinafter to be set forth. an annular plate 54 having a transversely extending slot 55 is disposed upon the inner end of spindle 25, the oppositely disposed lugs 56 thereon, projecting through the aforesaid slot 55 to maintain the latter in a fixed position. Radially projecting from the plate in diagonal relation are the two bolt actuating wings 57 and 57' respectively. The extremities of the respective wings are bill shaped in design and their contacting surfaces arcuate shaped to conform with the similarly shaped surfaces of stops By constructing the stops and cooperating wings in the manner aforesaid when said wings are actuated through the instriunentality of the spindle stress may be applied to the stops 53 at points thereon coincident with the longitudinal axes of said lugs wherein it will be apparent the bolts may be uniformly retracted without any lateral pressure being exerted thereupon by the contacting surfaces of said wings. Plate 54 is also provided with a rearwardly extending circumseribing flange 58. This flange 58 forms in effect a seat 59 to receive a washer plate 60, having two openings 61 for the reception of fastening elements which project'through the plate 54 and the lugs 56 on the end of the spindle. Inasmuch as it is essential to have the spring actuated detent maintained in predetermined relation with respect to the point indicated by on the dial plate hereinbefore set forth the wing 57 has a width coinciding with the space intermediate its contacting stop and the contiguous bolt, whereby rotary play of the spindle is avoided.

To provide an auxiliary guiding means a pair of diametrically disposed hemispherically shaped guide blocks 62 are integrally formed with the inner surface of easing 7 contiguous the outer end thereof. However, it is to be understood, if more desirable, hemispherical blocks 62 may be detachably afiixed to the guide plate 10. The purpose of the aforesaid guiding blocks 62 being to form a seat for the yoke shaped extensions 51, the outer edges of which are shaped to conform to the configuration of the wall of said seat. A portion of the respective blocks 62 is countersunk as at 63 to form pockets for the coil retaining pins 49 hereinbefore mentioned, as clearly shown in Fig. 3 of the drawings.

To prohibit the tumblers from moving horizontally on the spindle 25 I find it expedient to interpose a gasket 64 intermediate the inner surface of guide plate 10 and the contiguous flange of the adjacent tumbler.

For the purpose of rotating the cap plate 16 hereinbefore referred to, it has integrally formed therewith an operating knob 65 the latter having the configuration shown in Figs. 1 and 4 of the drawings. As frequently during transportation, trunks and the like are carelessly and unskillfully handled, it is an advantageous feature if the lock structure has no protruding parts likely to contact with external. objects, in consequence whereof, I deem it advisable to dispose the operating knob 65 in the dial plate so that its outer surface coincides with that of the latter, which not only avoids all protuberances but also materially enhances the artistical appearance of the lock.

From the foregoing structural outline it will be seen when the various parts of the lock are assembled, if the notches in the detent operating plate and tumblers, are out of registration and the spring actuated detent depressed, the operating knob may be rotated without in any way affecting the spindle 25 and bolts operatively associated therewith, but, however, when the notches in the respective tumblers and detent operating plate have been operated into alinement in accordance with a predetermined combination, the detent by reason of the spring connected thereto will take in said notches and permit actuation of the spindle and retraction of the bolts on operation of the knob 65 as will be readily understood without further description. Owing to the formation of the notch and opening in the detent-operating plate 20 and flange thereof, if the detent is operativoly positioned, the plate 20 on rotation in one direction effects actuation of the spindle; whereas, on the other hand, if the plate 20 is rotated in the opposite direction the detent will be depressed and the tumblers disarranged, as will be readily obvious witl'ioutfurther discussion.

Also from the above it will be seen that I have provided in connection with the spindle a positive means whereby when the detent is released or depressed it will be simultaneously engaged or disengaged from its coaeting notches so that consequently, it is impossible to effect a premature setting of the combination as would result if the detent as permitted to be depressed at an incline.

Although in the foregoing I have described certain, elements as best adapted to perform the functions allotted to them, 'evertheless, it is to be understood that "various minor changes as to form, sub stance, etc, may be resorted to within the scope of the appended claims without de parting from or sacrificing any of the principles of this invention.

Having now described my invention, what I claim is:

1. In a permutation lock of the character described the combination with a bolt; a spindle, and means affording a positive connection between said bolt and spindle, of an operating member mounted upon said spindle and movable independently with re spect thereto, co-acting tumblers disposed upon said spindle, a spring actuated detent seated in the latter for cooperation with said tumblers and operating member and means in connection wit 1 said spindle to cause the detent to move uniformly therethrough sub stantially as and for the purpose set forth.

2. In a. permutation lock of the character described the combination with a bolt; of a rotatably mounted spindle having one extremity connected with said bolt, said spindle having therein a recess and slot communicating therewith, an operating member disposed on the free end of said spindle and independently movable with respect thereto, concentrically mounted co-a-cting tumblers carried by said spindle for co6p eration with said operating member, and a spring actuated detent seated in said recess and adapted to project through said slot and operatively engage said tumblers and operating member substantially as and for the purpose set forth.

3. In a permutation lock of the character described the combination with a pair of diametrically disposed spring actuated bolts, and means for actuating the latter; of a rotatably mounted spindle having one extremity connected with said means, said spindle having therein a longitudinally extending slot, a spring actuated detent slidably mounted in said slot and adapted to project therethrough, a laterally extending shoulder formed on said detent, guiding means in connection with one end of said spindle to receive said shoulder, whereby the latter is guided uniformly through said spindle, and a tumbler mechanism for cooperation with said detent substantially as and for the purpose set forth.

4. In a permutation lock of the character described the combination with a spring actuated bolt and means for operating the same; of a revolubly mounted spindle having one extremity operatively connected with said means, said spindle having therein a longitudinally extending slot, a laterally extending shoulder formed on one edge of said detent and projecting through the transversely extending slot formed in the free end of said spindle, whereby to cause said detent to be actuated uniformly through said spindle, an operating member mounted upon the free end of said spindle and independently movable with respect thereto, coacting tumbler plates concentrically mounted upon said spindle for cooperation with said operating member, said tumblers and operating member having therein means to engage said detent substantially as and for the purpose set forth.

5. In a permutation lock of the character described the combination with a spring actuated bolt and means for operating the same; of a revolubly mounted spindle operatively connected at one extremity with said means, said spindle having therein a longitudinally extending slot, a spring actuated detent operatively disposed within said slot, an operating member secured to the free end of said spindle and independently movable with respect theret0,tumblers concentrically mounted upon said spindle, for cooperation with said operating member, said tumblers and operating member having therein means to engage said detent, and means in connection with said spindle to cause said detent to move uniformly therethrough substantially as and for the purpose set forth.

6. In a permutation lock of the character described the combination with a spring actuated bolt and operating means for the same; of a spindle operatively connected at one extremity with said means and having a recess therein, a spring actuated detent longitudinally disposed within said recess, a plurality of tumblers concentrically mounted upon said spindle, said tumblers having notches formed in their inner edges to engage said detent, an operating member mounted upon the free end of the spindle and independently movable with respect thereto, said member having means to interlock with. said detent when operated in a predetermined direction and to d p e s. said detent when operated in the opposite direction, and means carried by the respective tumblers and operating member to establish co-action between the same substantially as and for the purpose set forth.

7. In a permutation lock of the character described the combination with a casing of a slotted spindle rotatably disposed therein, said casing being formed with diametrically opposed openings, a pair of spring actuated bolts slidably positioned within said casing and operable through said openings, operating means for said bolts, said means being connected to one extremity of said spindle, a plurality of annular co-acting tumblers concentrically mounted on said spindle, an operating member mounted upon the free extremity of said spindle and independently movable with respect thereto, means for establishing co-action between said operating member and the adjacent tumbler, a spring actuated detent mounted within said spindle and designed to project through said slot, said tumblers and operating member having means to engage said detent, substantially as and for the purpose set forth.

8. In a permutation lock of the character described the combination with a spring actuated bolt and means for operating the same; of a spindle having one end connected with said means, a spring actuated detent longitudinally positioned within said spindle and slidably mounted therein to project to the exterior thereof, a plurality of annular tumblers concentrically mounted upon said spindle, an operating member having therein a notch to engage said detent, a portion of the wall of said notch being disposed in alinement with the vertical axes of said operating member, the remaining portion thereof being arcuate shaped, whereby operation of said tumbler in a predetermined direction will actuate said spindle and operation in the opposite direction depress said detent, means in the inner edge of said tumblers to engage said detent, and additional means to establish co-action between said tumblers and operating member, substantially as and for the purpose set forth.

9. In a permutation lock of the character described the combination with a spring actuated bolt, and means for operating the same; of a spindle connected at one extremity with said means, a spring actuated detent seated in said spindle and adapted to project therethrough, co-acting tumblers concentrically mounted upon said spindle and having means to engage said detent, an operating member carried by said spindle and independently movable with respect thereto, means whereby said operating member may engage said detent to operate said spindle, and means for depressing said detent substantially as and for the set forth.

10. In a permutation lock of the character described the combination with a casing, having diametrically opposed openings, a pair of bolts slidably mounted in said casing and operable through said openings, means to normally maintain said bolts in extended position, a yoke shaped extension formed on each of said bolts, guiding means for said extensions, an operating stop formed on the respective extensions, a spindle disposed within said casing, means operatively connected with said spindle to en gage'said stops and exert a pressure therein coincident with the longitudinal axes thereof, and a permutation mechanism in conjunction with said spindle to actuate the latter substantially as and for the purpose set forth.

11. In a permutation lock of the character described the combination with an annular casing, a guiding plate disposed therein in spaced relation to one end thereof, and having therein a concentric opening, said casing being formed with diametrically opposed openings, bolts slidably mounted upon said guiding plate and operable through said openings, resilient means to normally maintain said bolts in extended position, a yoke shaped extension formed on each of said bolts, guiding means operating with said extensions, a spindle concentrically mounted in said casing, and having one extremity projecting through the opening in said guiding plate, a stop formed on the respective extensions, means carried by said spindle for exerting a pressure upon said stops coinciding with the longitudinal axes thereof, whereby to uniformly retract said bolts, and means to actuate said spindle, substantially as and for the purpose set forth.

12. In a permutation lock of the character described the combination with an annular casing, the latter having therein diametrically opposed openings, of a pair of slidably mounted bolts operable through said openings, resilient means to normally maintain said bolts in extended position, a spindle concentrically disposed within said purpose casing, a member disposed upon one end of ter described the combination with an annular casing, the latter having contiguous one end thereof a pair of diametrically opposed openings, a guiding plate disposed within said casing adjacent said openings, bolts slidably mounted upon said plate and adapted to project through the respective openings, said guiding plate having therein a concentrically disposed opening, and slots on opposite sides of said opening, a spindle disposed within said casing and having its inner end projecting through the annular opening in said guiding plate, a yoke shaped extension integrally formed on each of said bolts, guiding pins carried by the respective extensions and having their free ends projecting through the slots in said guiding plate, spring means in connection with said bolts to normally maintain the same in extended position, a bolt operating member affixed to the inner end of said spindle and co operating with said bolts to retract the same upon actuation of said spindle and means to actuate said spindle substantially as and for the purpose set forth.

14:. In a permutation lock of the character described, the combination with a hasp, of a dial plate thereon having a concentrically disposed opening, an annular casing fitted in said opening, a cap plate disposed upon the free end of said casing, the latter having therein adjacent said plate diametrically opposed openings, spring actuated bolts slidably disposed within said casing and adapted to project through the openings therein,

a rotatably mounted spindle in said casin means in connection with one end of said spindle for cooperation with'said bolts to retract the same, an operating plate seated in the opening in said dial plate, an operating knob formed on said plate and having its outer surface alining with that of said dial plate, and means to operatively connect said operating plate with said spindle whereby to actuate said bolts, substantially as and for the purpose set forth. I

15. In a permutation lock of the character described, the combination with a spindle having therein a longitudinally extending recess, a spring actuated detent slidably mounted in said recess, means to effect a uniform depression of said detent, tumblers mounted upon said spindle, an operating plate rotatably connected with one end of the latter, said tumblers and operating plate having therein means to engage said detent and means to establish co-action between said tumblers and operating plate substan tially as and for the purpose set forth.

16. In a permutation lock of the character described, the combination with a spindle having a spring actuated detent, tumblers carried by said spindle for cooperation with said detent, an operating member carried by said spindle, said operating member having means to engage and move said spindle when said member is operated in one direction, means in conjunction with the last mentioned means to depress said detent when said member is actuated in the opposite direction, and means to establish co-ac tion between said tumblers and operating member substantially as and for the purpose set forth. 7 T

, 17, In a permutation lock of the character described, the combination with a belt; of a spindle, means affording a positive connection between said bolt and spindle, an independently movable operating member carried by said spindle, cO-acting tumblers disposed upon the latter, and means in connection with said spindle to interconnect said tumblers and operating member, substantially as and for the purpose set forth.

18. In a permutation lock of the character described, the combination with a belt; of a spindle, means afiording a positive connection between said bolt and one extremity of said spindle, an operating member mounted upon said spindle and movable independently with respect thereto, co-acting tumblers disposed upon said spindle, and spring actuated means vertically movable therethrough for cooperation with said tumblers and operating member, substan tially as and for the purpose set forth.

19. In a permutation lock of the character described, the combination with a bolt and means for actuating the same; of a spindle having one end connected with said means, said spindle having therein a longitudinally extending slot, an operating member disposed-on the free end of said spindle and in dependently movable with respect thereto, a spring actuated detent slidably mounted within said spindle and adapted to project through said slot, a shoulder formed on said detent, said spindle having therein means to engage said shoulder whereby to cause said detent to move uniformly through said spindle, a tumbler mechanism disposed upon said spindle, said tumbler mechanism and operating member having therein means to engage said detent, substantially as and for the purpose set forth, i

20. In a permutation lock of the character described, the combination with a laterally moving spring actuated bolt and means for operating the same; of a rotatably mounted spindle having one extremity connected with said means, an operating member situated upon the free extremity of said spindle and independently movable with respect thereto, said spindle having a longitudinally extending slot, a spring actuated detent slidably mounted in said slot and adapted to project therethrough, a laterally extending shoulder carried by said detent and projecting through the transversely extending slot formed in one end of said spindle, whereby said detent may be actuated uniformly through the latter, co-acting tumblers dis posed upon said spindle, said tumblers and operating member having therein means to engage said detent, substantially as and for the purpose set forth.

21. In a permutation lock of the character described, the combination with a pair of diametrically disposed spring actuated bolts and means for actuating the latter; of a spindle fixedly connected therewith, an operating member mounted upon said spindle and movable independently with respect thereto, coacting tumblers disposed upon said spindle, a spring actuated detent seated in the latter for cooperation with said tumblers and operating member, substantially as and for the purpose set forth.

22. In a permutation lock of the character described, the combination with a pair of diametrically disposed spring actuated bolts and means for actuating the latter; of a spindle operatively connected therewith, an operating member mounted upon said spindle and movable independently with respect thereto, a permutation mechanism adapted to co-act with said operating member, a spring actuated detent seated in the spindle for coiiperation with said mecha nism and operating member, and means in connection with said spindle to cause the detent to move uniformly therethrough, substantially as and for the purpose set forth.

23. In a permutation lock, the combination with a spring actuated bolt, and means for retracting the same; of a spindle connected at one extremity with said means, a detent carried by said spindle, a plurality of tumbler disks concentrically mounted upon said spindle and having notches in their inner edges to engage said detent, an operatin member disposed upon the free end of said spindle and independently movable with respect thereto, said member being adapted to interlockingly engage said spindle when operated in a predetermined direction, and to depress said detent when operated in the opposite direction, substantially as and for the purpose set forth.

In a permutation lock, the combination with a casing having opposed openings, bolts operable therethrough and means to maintain said bolts in extended position; of a yoke formed on each of said bolts, a spindle disposed within said casing, means operatively connecting said spindle with said yokes, an operating member mounted upon said spindle and movable independently thereof, coacting tumblers disposed upon said spindle, and a sprin actuated detent seated in the latter for cooperation with said tumblers and operating member, substantially as and for the purpose set forth.

25. In a permutation lock, the combina tion with a casing having opposed openings, bolts operable therethrough and means to maintain said bolts in extended position; of a yoke formed on each of said bolts, guiding means cooperating with said yokes to obtain uniform movement thereof, a spindle, disposed within said casing, means operatively connecting said spindle with said yokes, an operating member mounted upon said spindle and movable independently thereof, coacting tumblers disposed upon said spindle, and a spring actuated detent seated in the latter for coperation with said tumblers and operating member, substantially as and for the purpose set forth.

26. In a permutation lock of the character described the combination with a casing, having diametrically opposed openings, a pair of bolts slidably mounted in said casing and operable through said openings, means to normally maintain said bolts in extended position, a yoke shaped extension formed on each of said bolts, guiding means for said extensions, an operatin stop formed on the respective extensions, a spindle disposed within said casing, means operatively connected with said spindle to engage said stops and exert a pressure thereon coincident with the longitudinal axes thereof, an operating member mounted upon said spindle and movable independently with respect thereto, coacting tumblers disposed upon said spindle, and a spring actuated detent seated in the latter for cooperation with said tumblers and operating member, substantially as and for the purpose set forth.

27. In a permutation lock of the character described the combination with a spring actuated bolt and means for operating; the same; of a spindle having one end connected with said means, a spring actuated detent longitudinally positioned within said spindle and designed to project therethrough, a plurality of annular tumblers concentrically mounted upon said spindle and having notches to receive said detent, an operating member having therein a notch to engage said detent, one wall of said notch being straight, the other arcuate shaped, whereby operation of said member in a predetermined direction will actuate said spindle, and operation in the opposite direction will depress said detent, and means td establish coaction between said tumblers and operating member, substantially as and for the purpose set forth.

In testimony whereof I aiiix my signature in the presence of two witnesses.

EMERY P. CRANDALL. Witnesses C. DUDLEY SHREVE, BAKER S. ATKIssoN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

